Mills w



(No Model.)

M. W. BARSE.

STEAM BOILER.

No. 319,545. Patented June 9, 1885.

UNHED Srmrns MILLS W. BARSE, OF OLEAN, NEW YORK.

STEAV- BOlLER.

. SPECIFICATION forming part of Letters Patent No. 319.545, dated June 9, 1885a Application filed November B, 1884. (No model.)

To aZZ whom it may concern:

Be it known that I, MILLs W. BARSE, a citi zen of the United States, residing at Olean, in the county of Cattaraugus and State of New York have invented certain new and useful Improvement in Steam-Bolers, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to steam-generators wherein water-tubes are arranged to project across the fire-box and fire space or spaces and communicate with the water reservoir or chamber, and provide an extended heatingsurface in direct contact with the fiame and heated products of combustion in the firechamber. u

The object of my invention is to compactly arrange said tubes in such manner as to eX- pose them effeetively to the action of the heat, and to adapt them to be readily accessible for eleansing and for repairs, and, furthermore, to arrange them with each other and with the water-chambers of the boiler in such a manner that a perfect circulation may be obtained of the water within the boiler, and the more rapid generation of steam thereby effected.

In the aecompanying drawings, Figure 1 is a vertical longitudinal section of a stationary boiler set in brick-work with my improvements applied thereto; Fig. 2, a transverse vertical section on the line x x of Fig. 1; Fig. 3, a perspective View of a crown-sheet and water-leg steam-generator, partly showing the interier of the fire-box and the ends of the water-tubes arranged therein. Fig. 4 is an enlargcd scctional View of my improved elbow-box, to which the ends of the water-tubes are connected; and Fig. 5, an enlarged View iu u det-ail, showing the ends of a cluster of watertubes arranged to illustrate a modification of my invention, as will hereinafter more fully appear.

A cylindrical water-drum, A, is set horizontally in brick-work B, to provide an inclosed space below the drum for the fire-boX C at the forward end of the drum, and a firechamber, D, at the rear end thereof. The fire-box and fire-chanber are separated by a hollow fire-bridge, E, preferably formed of boiler-iron, and communication with the interior of the drum A by ,a neck or short conduit-pipe, F, which serves the additional purpose of a support for the middle portion of the water-drum The fire-bridge is preferably of rectangular shape to form a solid wall extending from one side wall to the other side wall of the briclcwork. A series of burners, G, secured to supply-pipes G', are in this instance arranged at the base of the fire-box, and the flame and products of combustion pass through the fire-box and over the fire-bridge into the fire-chamber in the rear end of the generator, from whence they escape through the flue H at the bottom and rear end thereof into the chimney or staclr. Man-holes B' 13 arranged, respectively, in the front and rear end of the brick-work, are closed by doors M M, which admit of access to the interior of the fire-box and fire-chamber for repairs and for the removal of dust and other deposits.

The water-tubes I are made of two sections of wroughtdron or steel tubing, I' 1 of unequal lengths, arranged at a slight angle one with the other, and joined at their meeting ends by an elbow-box, J, of peculiar construction, as will hereinafter appear The divergin g ends of the tubes I' I pass through and into the front plate of the fire-bridge and project horizontally across the fire box. The longer tube 1 is arranged to enter the firebox below the shorter tube 1 and eXtend across the interior of the bridge E :and beyond the central line thereof, and the shorter tube I' terminates inside the front plate and upon the forward side of the fire-bridge boX, by which means the water in the fire -bridge, when heated, will pass out of the upper and short tubes upon one side of the bridge, and pass into the long tubes communicating with the other side of the fire-bridge, thus estab lishing a uniform circulation within said firebrdge water-chamber, and causing the water from the elevated drum to first pass down upon the rear side of said fire-bridge into the tubes, and after having been heated pass up the forward side of said bridge back into the forward end of the drum. As an additional means for securing a circulatiou within the boiler, as above described, a diaphragm-plate, K, is arranged within and diametrically across the neck or conduit-pipe F, by which means the water will flow from the rear end of the 'supply-drum A into the fire-bridge upon one side of the diaphragm, and back upon the other side of the diaphragm to the forward end of the drum.

The tubes in the fire-chanber at the rear of the fire-bridge are formed of short tubes L' L, joined together, and similar to the tubes I, but are connected with the interior of the firebridge in an inverse manner from that of the tubes I. The shorter tubes L' are arranged below the longer tubes L and terminate upon the inner side of and close to the rear wall of the fire-bridge, and the longer tubes extend across the interior of the fire-bridge to the forward end thereof, by which means the colder water' first enters the lower tubes from the cold-water side of the fire-bridge, and after being heated is discharged upon the hot-water side of said' bridge to mingle with the hot water from the tubes I', and provide further means for preserving a uniform circulation with the boiler, such as previously described herein. The steam-dome N of the boileris secured to the upper side of the water-drum A, and is preferably arranged at the forward end thereof, by which means the hot water returning from the forward end of the fire -bridge box is conducted directly beneath the steamdome. The elbow-box J, which joins the meeting'ends of the water-tubes, is made rectangular, and of sufficient size to form achamber into which the mud, sediment, and other matter carri'ed through the tubes by this circulation of the water will be deposited. A hand-hole, J', and' cap-plate J 2 are arranged upon the side of thebox opposite the ends of the water-tubes, and in line with the interior thereof, to admit of the insertion of a scraper or other tools for cleaning the tubes of scales or other deposit. The door J is arranged upon the inner side of the box, and is held in place by a bolt, J which passes through the door and through a crab-collar, J arranged to bear upon the out.- side of the box.

Grate-bars may 'ne substituted in any wellknown manner for the -gas-jets shown in Fig. 1, and other modfications may be made without departing from the spirit of my inventionsuch, for instance, as the arrangement of tubes shown in Fig. 5, wherein said tubes are in series arranged one above the other in still more inclined or diagonal lines, to connect with the water-bridge chambe'r of the boiler at their lower ends in the same vertical plane,'and to connect with said chamber at their upper ends in a different plane, by which means the cold water will descend in a plane parallel with the ascending plane of the hot water, thus formi ing a series of circulation-currents near] y similar to that described in connection with the arrangement of tubes illustrated in the main figures of the drawings, and previously described herein.

I do not limit myself to the arrangement of tubes applied to the forms of boilers herein shown, as they may be used upon other boilers with good effect, and, when desired, the

with a water-drum, of the hollow firebridge connected to the under side of said drum and the pairs of water-tubes'projecting across the fire-box, one of the tubes of each pair communicating with the rear portion of the interior of the fire-bridge, and the other with the front thereof, substantially as and for the purpose described 2. Iu a steam-generator, the combination, with the water-drum,of the hollow fire-bridge connected to the under side of said drum, the water tubes straight from one end to the other, but diverging from their elbowbox, and communicating with the interior of the fire-bridge, as set forth, and arranged to project across the fire-box, substantially as' described.

3. In a steam-generator, the combination, with the brick-work of the furnace,of the water-drum, the hollow fire-bridge arranged to communicate with the under side ofsaid drum, the water-tubes projecting from the fire-bridge into the fire-chamber, and entering at acute angles their removable elbow-caps, and the covered man-holes formed in the brick-work of the fur-hace opposite said elbow-caps, substantially as and for the purpose described.

4. In a steam-generator, the water-tubes of unequal lengths,arranged in pairs at an angle one with the other, in combination with the elbow-box J, formed with the hand-bole J', arranged in line with the interior of both of said tubes, the internally-arranged cap-plate J and eXternally-arranged crab-collar J and the bolt J substantially as and for the purpose described.

5. The combination, with the water leg, hollow fire bridge, or water reservoir of a steam-generator, of the water-tubes of unequal length, arranged one above the other, to project from said water-reservoir into the firespace and re-enter said reservoir at their upper ends in a plane parallel with and outside of the vertical plane in which their lowermost ends terminate, substantially as and for the purpose described.

6. The combination, with the water-leg,'

hollow fire-bridge, or water-reservoir of a steam-generator, of the water-tubes formed of sections of unequal lengths, arranged one above the other, to project from one side of said reservoir, substautiall y as and for the purpose described.

7. The combination, with the hollow firebridge, of a steam-generator formed of straight IOO IIO

tubes of unequal length, arranged in series of said fire-bridge, and a daphragni-plate, k,

upon opposite sides of said fire-bridge, to project into the fire-spaces in front and in'rear thereof, and communicate with the interior of 5 the fire-bridge and terminate therein upon opposite sides thereofisubstantially as described.

8. The combnation, in a steam-generator,

of the water-drum, the hollow fire bridge communicating therewith, the water tubes IO projecting from said fire-bridge into the firechamber, and terminating upon opposite sides arranged across the neok or Conduit connecting the fire-bridge and water-drum, substantially as and for the purpose described.

In testimony whereof I affix my signature in presence of two witnesses.

MILLS W. BARSE.

Witnesses:

GEO. A. BORDEN, O. D. CLARKE. 

